* {
    margin: 0;
    padding: 0;
}

body {
    background-color: rgb(47, 90, 43);
}

ul {
    list-style: none;
}

ul .daohang {
    text-decoration: none;
    font-weight: 600;
}

.nav li {
    float: right;
    height: 50px;
    font: 25px/33px '微软雅黑';
}

.logo{
    float: left;
    position: absolute;
    top: 1px;
    left: 44%;
}

header {
    display: block;
    position: fixed;
    left: 0px;
    top: 0px;
    width: 100%;
    z-index: 5;
    box-shadow: rgba(0, 0, 0, 0.3) 0px 4px 4px 0px;
    background-color: rgba(4, 17, 4, 0.319);
}

header a {
    color: aliceblue;
    text-decoration: none;
    display: block;
    padding: 9px 50px;
}

header a:hover {
    background-color: rgb(0 0 0 / 25%);
    padding: 9px 50px;
}

video {
    width: 100%;
    top: 0;
    left: 0;
    position: absolute;
}

.yinyue {
    height: 44px;
    width: 44px;
    margin-top: 3px;
    margin-left: 5px;
    display: inline-block;
}

audio {
    display: none;
    position: absolute;
    top:2px;
    left: 2px;
}

.yinyue:hover #media {
    display: block;
}

.rotate {
    cursor: pointer;
    animation: rotate 10s linear infinite;
}

div audio:hover {
    animation-play-state: paused;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.zongbiao {
    color: rgb(183, 230, 184);
    font: 500 90px '微软雅黑';
    text-shadow: 5px 5px 3px rgb(10, 60, 22);
    position: absolute;
    top: 920px;
    left: 50px;
    display: block;
}

.jianjie {
    text-align: center;
    color: rgb(183, 230, 184);
    font: 500 45px/30px '微软雅黑';
    height: 50px;
    width: 770px;
    position: absolute;
    top: 1070px;
    left: 19px;
}

a img{
    position: absolute;
    top: 700px;
    left: 47.5%;
    width: 80px;
    height: 80px;
    border-radius: 60px;
    z-index: 3;
    background-color: rgba(4, 17, 4, 0.319);
}
